摘要:
The present invention relates to methods of demulsifying employing condensates as demulsifiers for oil-in-water emulsions and prepared fromA) a precondensate from one or more trialkanolamines of the general formula I ##STR1## in which R.sup.1 to R.sup.3 denote the same or different 1,2-alkylene groups of from 2 to 4 carbon atoms, andB) from 0.1 to 30% w/w, based on said precondensate, of one or more of the following compounds II:a) urea or a urea derivative of the general formula IIa ##STR2## b) a urea derivative of the general formula IIb ##STR3## c) a urethane of the general formula IIc ##STR4## and/or d) a urethane of the general formula IId ##STR5## in which R.sup.1 is hydrogen, C.sub.1 -C.sub.20 -alkyl or C.sub.2 -C.sub.20 -alkenyl,R.sup.2 and R.sup.3 are the same or different and denote hydrogen or C.sub.1 -C.sub.4 -alkyl,R.sup.4 is C.sub.1 -C.sub.4 -alkyl andR.sup.5 is C.sub.1 -C.sub.12 -alkylene.
摘要:
The subject invention relates to corrosion inhibitors prepared by reacting certain imidazolines or precursors thereof with sulfur. The corrosion inhibitors are particularly useful in inhibiting corrosion of metal tanks caused by CO.sub.2 and H.sub.2 S ("acid gas") during the transport and storage of crude oils.
摘要:
Color-stabilized nonionic surfactants which contain chemically bonded poly(alkylene oxide) groups with terminal hydroxyl groups, wherein the color stabilizer is from 0.1 to 5% by weight, based on surfactant, of one or more compounds of the formula ##STR1## where X is O, CH.sub.2, C.sub.2 H.sub.4 or C.sub.3 H.sub.6, Y is O or NH and Z is H, CH.sub.3 or CH.sub.2 OH.
摘要翻译:含有化学键合的具有末端羟基的聚(环氧烷)基团的颜色稳定的非离子表面活性剂,其中颜色稳定剂为基于表面活性剂的0.1至5重量%的一种或多种下式的化合物,其中X 是O,CH 2,C 2 H 4或C 3 H 6,Y是O或NH,Z是H,CH 3或CH 2 OH。
摘要:
An improved process for the preparation of polymaleic acids having molecular weights of from 200 to 1,500, by polymerizing maleic anhydride in acetic anhydride in the presence of from 0.2 to 0.5 mole of hydrogen peroxide per mole of maleic anhydride, at from 80.degree. to 140.degree. C., and builders and encrustation inhibitors comprising the polymaleic acids prepared by the said process, for use in detergents.
摘要:
The invention relates to an aqueous disperse dye or optical brightener formulation which comprises(a) from 5 to 55 percent by weight, based on (a+c), of one or more finely divided dyes, optical brighteners or mixtures of these,(b) from 10 to 200 percent by weight, based on (a), of a water-soluble surfactant of the formula ##STR1## where X is from 0 to a mean value of 125, Y is from a mean value of 37 to a mean value of 250, but if X is >37, Y:X is at least 1:1, Z is 0 or 1 and Me.sym. is an alkali metal ion, or mixtures of such surfactants,(c) from 45 to 95 percent by weight, based on (a+c) of water or of a mixture of water and a water-retaining agent, with or without(d) further additives conventionally present in aqueous formulations.
摘要:
A process for preventing the corrosion of metals in aqueous systems by means of low-foam corrosion inhibitors consisting of alkanolamine salts of maleamic acids.
摘要:
Nonwovens of natural and synthetic fibers which are bonded uniformly over the whole cross-section are obtained by using as binders aqueous polymer dispersions containing as heat-sensitizing agents alkoxylated amines having inverse solubility and a pH of less than 6.
摘要:
Grafted polyamidoamines and grafted polyethyleneimines obtainable by free-radically initiated polymerization of (a) 1-vinylpyrrolidone, 1-vinyltriazole, 1-vinylimidazoles, mixtures of said monomers or mixtures of at least one of said monomers with up to 20% by weight of other monoethylenically unsaturated monomers in the presence of (b) water-soluble or -dispersible polyamidoamines, polyethyleneimines or mixtures thereof in a weight ratio of (a):(b) from 5:95 to 95:5, are useful as dye transfer inhibitors in surfactant-based detergents when included therein in an amount from 0.05 to 10% by weight.